org.spdx.compare.ExtractedLicenseSheet.java Source code

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Here is the source code for org.spdx.compare.ExtractedLicenseSheet.java

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/**
 * Copyright (c) 2013 Source Auditor Inc.
 * Copyright (c) 2013 Black Duck Software Inc.
 * 
 *   Licensed under the Apache License, Version 2.0 (the "License");
 *   you may not use this file except in compliance with the License.
 *   You may obtain a copy of the License at
 *
 *       http://www.apache.org/licenses/LICENSE-2.0
 *
 *   Unless required by applicable law or agreed to in writing, software
 *   distributed under the License is distributed on an "AS IS" BASIS,
 *   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 *   See the License for the specific language governing permissions and
 *   limitations under the License.
 *
*/
package org.spdx.compare;

import java.util.Arrays;
import java.util.Comparator;

import org.apache.poi.ss.usermodel.Cell;
import org.apache.poi.ss.usermodel.CellStyle;
import org.apache.poi.ss.usermodel.Row;
import org.apache.poi.ss.usermodel.Sheet;
import org.apache.poi.ss.usermodel.Workbook;
import org.spdx.rdfparser.InvalidSPDXAnalysisException;
import org.spdx.rdfparser.license.AnyLicenseInfo;
import org.spdx.rdfparser.license.ExtractedLicenseInfo;
import org.spdx.spdxspreadsheet.AbstractSheet;

/**
 * Comparison results for extracted licenses
 * Column 1 contains the extracted text
 * Columns 2 through N contains the license information in the format licenseId [licenseName] {licenceUrls} (licenseComment)
 * @author Gary O'Neall
 *
 */
public class ExtractedLicenseSheet extends AbstractSheet {

    class ExtractedLicenseComparator implements Comparator<AnyLicenseInfo> {

        /* (non-Javadoc)
         * @see java.util.Comparator#compare(java.lang.Object, java.lang.Object)
         */
        @Override
        public int compare(AnyLicenseInfo o1, AnyLicenseInfo o2) {
            if (o1 instanceof ExtractedLicenseInfo) {
                if (o2 instanceof ExtractedLicenseInfo) {
                    ExtractedLicenseInfo l1 = (ExtractedLicenseInfo) o1;
                    ExtractedLicenseInfo l2 = (ExtractedLicenseInfo) o2;
                    return l1.getExtractedText().compareTo(l2.getExtractedText());
                } else {
                    return 1;
                }
            } else {
                return -1;
            }
        }
    }

    ExtractedLicenseComparator extractedLicenseComparator = new ExtractedLicenseComparator();

    private static final int EXTRACTED_TEXT_COL = 0;
    private static final int EXTRACTED_TEXT_WIDTH = 100;
    private static final String EXTRACTED_TEXT_TITLE = "Extracted License Text";
    private static final int LIC_ID_COL_WIDTH = 20;
    private static final int FIRST_LIC_ID_COL = 1;

    /**
     * @param workbook
     * @param sheetName
     */
    public ExtractedLicenseSheet(Workbook workbook, String sheetName) {
        super(workbook, sheetName);
    }

    /* (non-Javadoc)
     * @see org.spdx.spdxspreadsheet.AbstractSheet#verify()
     */
    @Override
    public String verify() {
        // Nothing to verify
        return null;
    }

    /**
     * @param wb
     * @param sheetName
     */
    public static void create(Workbook wb, String sheetName) {
        int sheetNum = wb.getSheetIndex(sheetName);
        if (sheetNum >= 0) {
            wb.removeSheetAt(sheetNum);
        }
        Sheet sheet = wb.createSheet(sheetName);
        CellStyle headerStyle = AbstractSheet.createHeaderStyle(wb);
        CellStyle defaultStyle = AbstractSheet.createLeftWrapStyle(wb);
        Row row = sheet.createRow(0);
        sheet.setColumnWidth(EXTRACTED_TEXT_COL, EXTRACTED_TEXT_WIDTH * 256);
        sheet.setDefaultColumnStyle(EXTRACTED_TEXT_COL, defaultStyle);
        Cell extractedHeaderCell = row.createCell(EXTRACTED_TEXT_COL);
        extractedHeaderCell.setCellStyle(headerStyle);
        extractedHeaderCell.setCellValue(EXTRACTED_TEXT_TITLE);
        for (int i = FIRST_LIC_ID_COL; i < MultiDocumentSpreadsheet.MAX_DOCUMENTS; i++) {
            sheet.setColumnWidth(i, LIC_ID_COL_WIDTH * 256);
            sheet.setDefaultColumnStyle(i, defaultStyle);
            Cell cell = row.createCell(i);
            cell.setCellStyle(headerStyle);
        }
    }

    /**
     * @param comparer
     * @param docNames 
     * @throws InvalidSPDXAnalysisException 
     */
    public void importCompareResults(SpdxComparer comparer, String[] docNames)
            throws SpdxCompareException, InvalidSPDXAnalysisException {
        if (comparer.getNumSpdxDocs() != docNames.length) {
            throw (new SpdxCompareException(
                    "Number of document names does not match the number of SPDX documents"));
        }
        this.clear();
        Row header = sheet.getRow(0);
        int[] licenseIndexes = new int[comparer.getNumSpdxDocs()];
        AnyLicenseInfo[][] extractedLicenses = new AnyLicenseInfo[comparer.getNumSpdxDocs()][];
        for (int i = 0; i < extractedLicenses.length; i++) {
            Cell headerCell = header.getCell(FIRST_LIC_ID_COL + i);
            headerCell.setCellValue(docNames[i]);
            AnyLicenseInfo[] docExtractedLicenses = comparer.getSpdxDoc(i).getExtractedLicenseInfos();
            Arrays.sort(docExtractedLicenses, extractedLicenseComparator);
            extractedLicenses[i] = docExtractedLicenses;
            licenseIndexes[i] = 0;
        }
        while (!allLicensesExhausted(extractedLicenses, licenseIndexes)) {
            Row currentRow = this.addRow();
            String extractedLicenseText = getNextExtractedLicenseText(extractedLicenses, licenseIndexes);
            Cell licenseTextCell = currentRow.createCell(EXTRACTED_TEXT_COL);
            licenseTextCell.setCellValue(extractedLicenseText);
            for (int i = 0; i < extractedLicenses.length; i++) {
                if (extractedLicenses[i].length > licenseIndexes[i]) {
                    if (extractedLicenses[i][licenseIndexes[i]] instanceof ExtractedLicenseInfo) {
                        String compareExtractedText = ((ExtractedLicenseInfo) extractedLicenses[i][licenseIndexes[i]])
                                .getExtractedText();
                        if (LicenseCompareHelper.isLicenseTextEquivalent(extractedLicenseText,
                                compareExtractedText)) {
                            Cell licenseIdCell = currentRow.createCell(FIRST_LIC_ID_COL + i);
                            licenseIdCell.setCellValue(formatLicenseInfo(
                                    (ExtractedLicenseInfo) extractedLicenses[i][licenseIndexes[i]]));
                            licenseIndexes[i]++;
                        }
                    } else {
                        licenseIndexes[i]++; // skip any licenses which are not non-standard licenses
                    }
                }
            }
        }
    }

    /**
     * Formats the license information for the license ID cell
     * @param license
     * @return
     */
    private String formatLicenseInfo(ExtractedLicenseInfo license) {
        StringBuilder sb = new StringBuilder(license.getLicenseId());
        if (license.getName() != null && !license.getName().isEmpty()) {
            sb.append("[");
            sb.append(license.getName());
            sb.append("]");
        }
        if (license.getSeeAlso() != null && license.getSeeAlso().length > 0) {
            sb.append("{");
            sb.append(license.getSeeAlso()[0]);
            for (int i = 1; i < license.getSeeAlso().length; i++) {
                sb.append(", ");
                sb.append(license.getSeeAlso()[i]);
            }
            sb.append("}");
        }
        if (license.getComment() != null && !license.getComment().isEmpty()) {
            sb.append("(");
            sb.append(license.getComment());
            sb.append(")");
        }
        return sb.toString();
    }

    /**
     * Get the next extracted license text in alpha sort order from the SPDXLicenseInfos
     * @param licenseInfos
     * @param licenseIndexes
     * @return
     */
    private String getNextExtractedLicenseText(AnyLicenseInfo[][] licenseInfos, int[] licenseIndexes) {
        String retval = null;
        for (int i = 0; i < licenseInfos.length; i++) {
            if (licenseInfos[i].length > licenseIndexes[i]) {
                AnyLicenseInfo licenseInfo = licenseInfos[i][licenseIndexes[i]];
                String extractedText = "";
                if (licenseInfo instanceof ExtractedLicenseInfo) {
                    extractedText = ((ExtractedLicenseInfo) licenseInfo).getExtractedText();
                }
                if (retval == null || retval.compareTo(extractedText) > 0) {
                    retval = extractedText;
                }
            }
        }
        return retval;
    }

    /**
     * Returns true if the license indexes is greater than the size of the licenseInfos for all documents
     * @param licenseInfos
     * @param licenseIndexes
     * @return
     */
    private boolean allLicensesExhausted(AnyLicenseInfo[][] licenseInfos, int[] licenseIndexes) {
        for (int i = 0; i < licenseInfos.length; i++) {
            if (licenseIndexes[i] < licenseInfos[i].length) {
                return false;
            }
        }
        return true;
    }

}